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  1. #1
    Join Date
    Jun 2008
    Location
    Mpls.,MN
    Posts
    22

    Loudness of 74 dB

    Does anyone know how loud 74 dB is. Compared to ? I'm assuming it is that loud in the 1 stage of a HP. It is a Bryant 286 and I was wondering if it would be annoying to listen to since it will be located outside a window. Anyone know how loud it would be in 2nd stage?

  2. #2
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,069
    That should be the sound rating in second stage.

    74db is twice as loud as 71, and 74db is only half as loud as 77.

    Its not very loud. But sound is a perceived annoyance.
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  3. #3
    Join Date
    Jun 2008
    Location
    Phoenix, AZ
    Posts
    70

    Cool

    If you look on some manufacturer's websites you can see the decibel ratings on them, I can't remember what the quietest is but they have some quieter than that unit. That's not very loud, but there are quieter units if want one that will be humming instead of talking to you...

  4. #4
    Join Date
    Mar 2008
    Location
    Houston, Texas
    Posts
    352
    OSHA says prolonged exposer to anything 85 db or over, you need hearing protection.

  5. #5
    Join Date
    Jun 2008
    Location
    Mpls.,MN
    Posts
    22
    On the Bryant website for that model of hp it says "as low as 74 dB". It doesn't say which stage that is for. So I was wondering if it will be much louder. I'm not sure what 74 dB level would be.

  6. #6
    Join Date
    Apr 2007
    Posts
    6,285
    75 db is about equivalent to a washing machine. 70 is like a quiet back ground conversation and 80 is about = to a vacuum cleaner close to you in the upper range or the loudest vacuum cleaners.

  7. #7
    Join Date
    May 2008
    Location
    North Texas
    Posts
    105
    70 dB is average conversational speech at 3.25 feet. An average office is about 55 dB, and a residence 40 dB.

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